I had awesome chance to spend about 3 hours with official czech raptor team today on the 10 day long event.

So guys i can unveil there are some big things coming from Thuder Tiger soon (can't say much more, i promised i won't, it's not official yet).
But they had E720 beast there and i took few pictures on the mechanic part so here is the close up for you who are after this beast.
Overall heli :

Main gear. The biggest piece of cog for helis i saw so far! Notice that teeth are angled and not 90 degrees :

Head of the heli. This is the only flybarred head in the Europe and it was it's maiden flight today!

Main shaft and its holder in the frame. Heavy duty 15mm main shaft.

Here are 2 pictures. On the left one, notice small hole in the metal lever and the hole in frame. This is for setting middle position. On the second photo you see the red part around the servo, you loosen that one, and put some screw driver through whole heli through holes on the first photo. Then turn on the heli and put sticks to the middle and then tighten the red part around the servo. Grats you have 90. Very ingenious method.